
package de.fhhof.brst.dao;

import java.sql.Types;
import org.hibernate.Hibernate;
import org.hibernate.dialect.Dialect;
import org.hibernate.dialect.function.SQLFunctionTemplate;
import org.hibernate.dialect.function.StandardSQLFunction;
import org.hibernate.dialect.function.VarArgsSQLFunction;
public class SQLiteDialect extends Dialect {
  public SQLiteDialect() {
 
        super(); 
        registerColumnType(Types.BIT, "integer"); 
        registerColumnType(Types.TINYINT, "tinyint"); 
        registerColumnType(Types.SMALLINT, "smallint"); 
        registerColumnType(Types.INTEGER, "integer"); 
        registerColumnType(Types.BIGINT, "bigint"); 
        registerColumnType(Types.FLOAT, "float"); 
        registerColumnType(Types.REAL, "real"); 
        registerColumnType(Types.DOUBLE, "double"); 
        registerColumnType(Types.NUMERIC, "numeric"); 
        registerColumnType(Types.DECIMAL, "decimal"); 
        registerColumnType(Types.CHAR, "char"); 
        registerColumnType(Types.VARCHAR, "varchar"); 
        registerColumnType(Types.LONGVARCHAR, "longvarchar"); 
        registerColumnType(Types.DATE, "date"); 
        registerColumnType(Types.TIME, "time"); 
        registerColumnType(Types.TIMESTAMP, "timestamp"); 
        registerColumnType(Types.BINARY, "blob"); 
        registerColumnType(Types.VARBINARY, "blob"); 
        registerColumnType(Types.LONGVARBINARY, "blob"); 
        registerColumnType(Types.BLOB, "blob"); 
        registerColumnType(Types.CLOB, "clob"); 
        registerColumnType(Types.BOOLEAN, "integer"); 

        registerFunction("concat", new VarArgsSQLFunction(Hibernate.STRING, "",    "||", "")); 
        registerFunction("mod", new SQLFunctionTemplate(Hibernate.INTEGER,    "?1 % ?2")); 
        registerFunction("substr", new StandardSQLFunction("substr",Hibernate.STRING)); 
        registerFunction("substring", new StandardSQLFunction("substr",Hibernate.STRING)); 
  }

  public boolean supportsIdentityColumns() {
 
        return true; 
  }

  public boolean hasDataTypeInIdentityColumn() {
 
        return false; 
  }

  public String getIdentityColumnString() {
 
        return "integer"; 
  }

  public String getIdentitySelectString() {
 
        return "select last_insert_rowid()"; 
  }

  public boolean supportsLimit() {
 
        return true; 
  }

  protected String getLimitString(String query, boolean hasOffset) {
 
        return new StringBuffer(query.length()+20). 
            append(query). 
            append(hasOffset ? " limit ? offset ?" : " limit ?"). 
            toString(); 
  }

  public boolean supportsTemporaryTables() {
 
        return true; 
  }

  public String getCreateTemporaryTableString() {
 
        return "create temporary table if not exists"; 
  }

  public boolean dropTemporaryTableAfterUse() {
 
        return false; 
  }

  public boolean supportsCurrentTimestampSelection() {
 
        return true; 
  }

  public boolean isCurrentTimestampSelectStringCallable() {
 
        return false; 
  }

  public String getCurrentTimestampSelectString() {
 
        return "select current_timestamp"; 
  }

  public boolean supportsUnionAll() {
 
        return true; 
  }

  public boolean hasAlterTable() {
 
        return false; 
  }

  public boolean dropConstraints() {
 
        return false; 
  }

  public String getAddColumnString() {
 
        return "add column"; 
  }

  public String getForUpdateString() {
 
        return ""; 
  }

  public boolean supportsOuterJoinForUpdate() {
 
        return false; 
  }

  public String getDropForeignKeyString() {
 
        throw new UnsupportedOperationException("No drop foreign key syntax supported by SQLiteDialect"); 
  }

  public String getAddForeignKeyConstraintString(String constraintName, String[] foreignKey, String referencedTable, String[] primaryKey, boolean referencesPrimaryKey) {
 
        throw new UnsupportedOperationException("No add foreign key syntax supported by SQLiteDialect"); 
  }

  public String getAddPrimaryKeyConstraintString(String constraintName) {
 
        throw new UnsupportedOperationException("No add primary key syntax supported by SQLiteDialect"); 
  }

  public boolean supportsIfExistsBeforeTableName() {
 
        return true; 
  }

  public boolean supportsCascadeDelete() {
 
        return false; 
  }

}
